There's a special limited edition hardcover of The Aylesford Skull being published in February 2013 with this cover design: 750 signed and numbered copies, a jacketed, cloth-bound hardcover with ribbon, signed by James P. Blaylock. Exclusive foreword by K.W. Jeter and introduction by Tim Powers. Also, 26 signed and lettered copies, as above but encased in a custom-made traycase.

Yes, there's been quite an upsurge of republishing lately. I think most of Blaylock's back-list of books is being re-issued in e-book format, and it looks like Titan is doing mass-market paperbacks of his steampunk stuff. They have a uniform steampunk cover style for them - the new cover for Homunculus can be seen at http://www.sybertooth.com/blaylock/homuncul.htmBeing mass-market editions, they should be quite affordable, and not sell out quickly like limited editions.

I went to the Titan Books website and found that they're also going to be releasing editions of Homunculus & Lord Kelvin's Machine a little later this year. No mention of whether any afterwords or other commentary is going to be added or not.